Resilient support



Oct. 22, 1935. H. B. LAWTON RESILI ENT SUPPORT Filed June 28, 1954 INVENTOR. Hi1? VE Y B. L/lwro/v ATTORNEY.

Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE RESILIEN T SUPPORT Application June 28,

2 Claims.

This invention relates to improvements in resilient supports and more particularly to a means for resiliently supporting an electric or other motor to absorb the vibrations set up in the motor frame when the motor is in operation.

With this and other objects in view, reference is made to the accompanying sheet of drawing which illustrates a preferred form of this invention with the understanding that detail changes may be made without departing from the scope thereof.

In the drawing:

Figure 1 is a fragmentary view in end elevation of a preferred embodiment of this invention with the upper part of the motor case broken away.

Figure 2 is a view in front elevation of Figure 1.

Figure 3 is an enlarged detail view of one of the supports, partly in section, taken on the line 44 of Figure 1.

Figure 4 is a projected view in perspective of the vibration-absorbing members.

The embodiment of this invention is illustrated as applied to an electric motor of a type in which the stator I is mounted between end plates or end bells 2 and 3 held together on each side of the stator by bolts 4. Each end bell is provided with similarly spaced-apart radially depending feet 5 which are mounted on flat springs 6 preferably bent back upon themselves to form loop portions 1, and the adjacent end portions 8 are secured to a base plate 9. The plate 9 extends between and below the end bells 2 and 3, as shown in Figure 1, and is preferably provided with struck-up portion I0, as shown in Figure 2. The base plate 9 extends slightly in advance of the resilientlymounted feet of the end bell and is preferably provided with a slot I I for attachment.

As shown in Figure 5, each foot terminates in a flat surface approximately forty-five degrees (45) to the horizontal and is provided with a screw-threaded headed retaining bolt I2 threaded axially into each foot to secure the vibrationabsorbing medium in place. The vibration-absorbing medium, as shown in the projected perspective view in Figure 4, includes a shouldered perforated member I3 and an annular member I4 adapted to receive the portion I5 of the member E3, as shown in Figure 3. It is preferable to form the resilient vibration absorbing members I3 and i 4 of a resilient substance such as gum rubber or caoutchouc. It is preferable to mount members I3 and I4 on each foot 5 and upon the free end of the fiat spring 6, as shown in detail in Figure 3. The free end of the fiat spring 6 is 1934, Serial No. 732,755

provided with a perforation adapted to receive the cylindrical extension I 5 of the member I3, and it is preferable in assembling the parts, as shown in Figure 3, to insert a washer I6 between the annular flange of the portion I3 and the 6 spring 5, then cause the annulus I4 to engage the portion I5 and the adjacent surface of the fiat spring 6. It is also preferable to insert a washer ii between the member I4 and the foot 5 and a washer I8 between the outer surface of the mem- 10 her I3 and the headed bolt I2. When the parts are assembled, as above described and shown in Figure 3, the bolt I2 is taken up to hold them in close contact. The fiat spring 6 is preferably provided with a portion I9 bent at right angles to the end in engagement with the resilient vibration absorbing members I3 and I4, which is continued to form the loop 1 overhanging the edge of the struck-up portion It of the base plate 9 and then extended along the top of the struck-up portion I0 to which it is preferably secured by rivets 20. By this construction and formation of the spring 6, the respective springs will absorb the major vibrations of the motor or the vibrations of greatest duration while the resilient members I3 and I4 will absorb the minor vibrations or those of less duration, so that little, if any, vibration is transmitted through the feet and springs to the base plate 9.

What I claim is:

1. In a vibration absorbing support for an electric motor, including a stator mounted between end plates with each of said end plates provided with similar spaced-apart radially depending feet terminating in flat surfaces approximately fortyfive degrees to the vertical, the combination with a base arranged under each end plate having struck-up parallel medial portions between said feet, of spring members looped back upon themselves having opposite ends provided with flat surfaces with one secured upon the said raised portion of the base and the other secured to the angular surface of the adjacent foot and with the loop of the spring extending downwardly over said raised portion of the base in parallel relation to the axis of the adjacent foot.

2. The structure of claim 1, wherein the spring securing means includes an axial retaining bolt passing through a retaining washer and flat spring end into each foot with members of resilient vibration absorbing material interposed between the angular surface of the foot and retaining washer on each. side of the spri HARVEY B. LAWTON. 

